Not complete it if we only know about the history of the guitar without knowing the key / chord guitar. And now a lot of beginners learning the guitar for a hobby or really want to become a musician with the title of the best guitar players in the world. Well here I am posting the lyrics with his guitar keys.

Am EmAren't you lonely?Am Em Dm Am/D Up there in utopiaDm Am/D F6 Fmaj7 Where nothing will ever be enough F6 Fmaj7Happily numb C So comfortable, we’re living in a bubble, bubble EmSo comfortable, we cannot see the trouble, trouble

[Pre-Chorus 1]

F Dm CAha, so put AmYour rose-colored glasses on EmAnd party on

[Chorus 1]

Am Em Turn it up, it’s your favorite songAm Em Dance, dance, dance to the distortionDm Am/D Turn it up, keep it on repeatDm Am/DStumbling around like a wasted zom- F6 Fmaj7-bie, yeah, we think we’re freeF6 Fmaj7 Drink, this one’s on me C Em Am We’re all chained to the rhythm, to the rhythm, to the rhythm

EmTurn it up, it’s your favorite songAm Em Dance, dance, dance to the distortionDm Am/D Turn it up, keep it on repeatDm Am/DStumbling around like a wasted zom- F6 Fmaj7-bie, yeah, we think we’re freeF6 Fmaj7 Drink, this one’s on me C Em Am We’re all chained to the rhythm, to the rhythm, to the rhythm

[Verse 2]

Am EmAre we tone deaf?Am Em Dm Am/D Keep sweeping it under the matDm Am/D F6 Fmaj7 Thought we could do better than that F6 Fmaj7I hope we can C So comfortable, we’re living in a bubble, bubble EmSo comfortable, we cannot see the trouble, trouble

[Pre-Chorus 2]

F Dm CAha, so put AmYour rose-colored glasses on EmAnd party on

[Chorus 2]

Am Em Turn it up, it’s your favorite songAm Em Dance, dance, dance to the distortionDm Am/D Turn it up, keep it on repeatDm Am/DStumbling around like a wasted zom- F6 Fmaj7-bie, yeah, we think we’re freeF6 Fmaj7 Drink, this one’s on me C Em Am We’re all chained to the rhythm, to the rhythm, to the rhythm

EmTurn it up, it’s your favorite songAm Em Dance, dance, dance to the distortionDm Am/D Turn it up, keep it on repeatDm Am/DStumbling around like a wasted zom- F6 Fmaj7-bie, yeah, we think we’re freeF6 Fmaj7 Drink, this one’s on me C Em We’re all chained to the rhythm, to the rhythm, to the rhythm

[Bridge]

Dm Em It is my desireF G Break down the walls to connect, inspireAmEh, up in your high place, liarsGTime is ticking for the empire

Dm The truth they feed is feebleEm F As so many times beforeG Am They greed over the people GThey stumbling and fumbling and we about to riot GThey woke up, they woke up the lions

[Chorus 3]

Am Em Turn it up, it’s your favorite songAm Em Dance, dance, dance to the distortionDm Am/D Turn it up, keep it on repeatDm Am/DStumbling around like a wasted zom- F6 Fmaj7-bie, yeah, we think we’re freeF6 Fmaj7 Drink, this one’s on me C Em Am We’re all chained to the rhythm, to the rhythm, to the rhythm

So the key guitar and the lyrics to his Katy Perry songs, please try and learn at home, and may be useful. Keep practicing so that you can be a great guitar player and of course when you want to become a great artist with a band or solo career, do not be hesitant or ashamed to learn to develop themselves by learning key guitar / guitar chord base. And thank you.